Electronic cigarette cartridge



FIG. 1 is a perspective view of an electronic cigarette cartridge;

FIG. 2 is a front view thereof; the rear view being identical thereto;

FIG. 3 is a left view thereof; the right view being identical thereto;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines represent portions of the electronic cigarette cartridge that form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette cartridge, as shown and described. 